Any ideas what this means...?

[R17PMB]

This warning light has just appeared on my E350 coupe (W212) any ideas what this could be..?

[jet_noise]

Two elderly persons have dumped on the seats?

[Monkeylegend]

It's a rear seat belt warning to say somebody in the back is not wearing their seatbelt.

Have you placed anything heavyish on the seat?

[V8FGO]

Rear seat belt status indicator

http://www4.mercedes-benz.com/manual-cars/ba/cars/...

Need to click on Safety > Occupant Safety then scroll down.

[R17PMB]

Awesome, cheers guys...